Add Grafana Alloy configuration files and update examples

- Introduced detailed configuration guidelines in alloy.instructions.md
- Added general instructions for project structure in general.instructions.md
- Created config.yaml for NAMU-PC with target hostnames
- Implemented example.alloy and openwrt.alloy for service discovery and scraping
- Added alloy_seed.json for initial configuration state
- Developed demo.alloy for comprehensive monitoring setup
- Established std.alloy for repository path formatting and host configuration loading
- Updated test.alloy to utilize new host configuration loading

test.alloy

@@ -0,0 +1,14 @@
+
+livedebugging {
+    enabled = true
+}
+
+import.file "libstd" {
+    filename = "lib/std.alloy"
+}
+
+libstd.load_host_config "load_config" {
+    host        = "NAMU-PC"
+    config_file = "OpenWRT/config.yaml"
+}
+